Machine for forming plastic materials



M. GALLO MACHINE FOR FORMING PLASTIC MATERIALS March 11, 1941.

Filed May 1s, 1940 INVENTOR. A440 ATTORNEY. 1

Patented Mar. 11, 1941 PATENT MACHINE FOR FDRMING missile MATERIALS Mario Gallo, San Francisco, Calif.

Application May 15, 1940, Serial No. 335,292

lclaim.

This invention relates particularly to a device or machine from which substances such a butter, cookie dough and the like may be discharged in a selected design and automatically cut to the 5 shape or size desired. 1

An object of the invention is to provide a portable machine for pro-forming pats of butter, or

, cookie dough pets, or similar articles to be formed of material the consistency of butter or dough, lfi'the machine having a chamber within which a bulk supply of butter or dough material is contained and from which selected amounts of the said material are discharged by manualmanipullation of the machine, the amount of material 1 discharged in each cycle of operation being sublect to the control of the machine operator, this I ,machiue permitting a greater volume of work to be turned out than by any other similar known apparatus of which applicant has any knowledge.

Other objects and advantages of the invention i are to provide a machine for pro-forming plastic materials that will be superior in point of sim=-- -80 may be embodied. in other. forms; and it is also to be understood that luaud by the claim iotlcwing the descriptionrit isdesired to cover the invention in whatsoever icrmit may be embodied,

In the accompanying drawing:

5 FL. 1 is a side elevation ordevice constructed in accordance with my invention. v

Fig. 2 is an end view-of Fig. 1.

Fig. 3 is an enlarged longitudinal section taken through the device shown in Fig. 1.

Fig. 4 is a cross section taken through Fig. 3

' p on the line 4-4.

In detail the construction illustrated in the drawing comprises a frame member i having a 5 body portion 2 thereon from which a handle member 3 depends. In the present illustration the body 2 is preferably rectangular in crosssection, although it would be within the purview of the invention to utilize any desired cross- 50 sectional shape.

A plunger 4 is arranged within the body membeer 2, said plunger having a cross-section corresponding to that of the interior or the body. The plunger 4 is adapted to slidably engage the inner 55 walls of the body 2 and is provided with a stem 5 which extends rearwardly through the end wall of the body 2.

The forward end of the body 2 is provided with a barrel or chamber 5 detachably mounted thereon in flush axial alignment therewith. The bar- 5- rel 6 has a cross-section which corresponds exactly to that of the interior of the body 2 in order that the plunger 5 may, in the operation of the device, move the full length of the barrel 8. The discharge end of the barrel 6 1s provided with in a removable die or form I which is designed to form or cut the butter or cookie dough into any desired selected shape The die i is' made removable in order that other dies of different shapes may besecured to the end of the barrel. is

In the operationoi the device, the barrel 6 is loaded with the material to be extruded or discharged and the plunger 4 is pulled into the body 2 so-that the plunger will. when operated, move against the material in the barrel and '20 cause the same to be extruded out through the die i. In order to accomplish this purpose I have provided a series of laterally disposed-teeth 8 along the under side of the plunger stem 5, said stem 5 preferably having a flat sided shape to engage a complementary slotinthe end wall oi. the body 2. The end of the stem 5 is provided 7 with ahandie e thereon for thepm'pose of assistme in manually pulling'the plunger 4 into the. loaded or cooked position in the body I. v so The handle member 3f entire body 2 is provided with a trigger member l8 which is pivoted thereto in theupper portion thereof at H, the upper end of the trigger having sides l2 thereof extendedupwardly into the interior of the body 3:; 2. A pawl i3 ispivoted intermediate its opposite ends on a pin as which is iournaled in the handle sides l2. One end of the pawl i3 is provided with a tooth I5 thereon. to engage the ratchet teeth 8 on the stem 5, while the other end of the pawl projects outwardlythrough the rear end of the body 2 beneath and in line'with the stem 5. A coil spring 16 is providedaround the trigger pivot Ii to maintainthe said'tliager in a normal angular positionrelatlve' to. the handle 8.- Sim-LL lariy a epring 'l-lis provided around the pawl tooth l6 to maintalnfthetecth 15 on the pawl in contact war ant arches. teeth 8 on the stem 5.

When the "device herein t e hand or an oper v ctcr. by-the1hum;is monitor- 3 and the pressure. to

I3, which forces the stem 5 and plunger 4 a distance of one notch or tooth forwardly into the lit barrel '6. Upon the release of the pressure applied to the trigger III, the pawl l2 rides back and engages the tooth immediately in the rear oi the one with which it was first engaged. Consmut-manipulation of the trigger ll will cause the plunger 4 to move progressively forward in a step by step movement, and with each actuation of the plunger, the bulk material held in the barrel 6 will be extruded or discharged therefrom.

.In order to cut of! the material which is extruded or discharged from the barrel 6, I have provided a u-shaped frame ll, the upper ends of which have a very fine diametered wire I! provided thereon. The wire I! on the frame I! is adapted to be reclprocated across the face of the die I and to cut off the.extruded or discharged material. The U-shaped frame (8 is carried on a .bar 20, the end of which is rotatably journaled in the side of the body 2 to keep the cutting off wire in a constantly elevated position. In order that the cutting ofl wire will not commence to work until after the material has been completely extruded from the barrel, and then only with a sharp, quickly reciprocated movement, I have provided a latch member 22 which is adapted to engage an arm 23 on the bar 2t to hold the bar 20, U-frame i8 and wire l9 in a locked up position. The latch 22 is secured to a bell crank 24 which is pivoted at 25 in the handle 3. The latch 22 is disengaged from the arm 23 by means of a striker pin 26 on the trigger HI engaging the free end of the bell crank 24. The location of the striker pin 28 on the trigger I0 is such that the striker pin will not engage the bell crank 24 to disengage the latch 22 from the arm 22 until the trigger in reaches the extreme end point of its arcuate movement, whereupon disengagement of the latch 22 from the arm 23 permits the tension spring 2| to force the bar 20, U-shaped frame l8 and cutting or! wire downwardly with a very fast, sharp action, causing the extruded material to bcut oil from the barrel 8.

when the extruded material has been completely discharged from the barrel 8, then the plunger 4 is pulled rearwardly into the body 2,

the barrel 6 is removed, refilled and then'respring 32 serves to pull the wire cutter is down across the extruded material and to sever it from the former die with a very fast, snappy movement. Having thus described this invention, what I claim and desire to secure by Letters Patent is;

A portable device for forming waters from plastics, comprising a cylindrical'container for bulk plastics; a die for preformlng the plastic as it is extruded from an end of said container; a carrier for said container having means thereon for detachably supporting said container; a plung-' er slidabiy confined in said carrier; a manually operated trigger and pawl on the carrier to advance said plunger intermittently into the container against the plastic to force the same from said container; 2. plastic cut-off means consist-- ing of a U shaped frame having a wire stretched across the legs thereof pivotally mounted on the carrier to reciprocate adjacent the extruding die; and means on said trigger to automatically operate said plastic cut off means at the termination of the trigger stroke across the outer face of the die, and a spring to return the'cut oif meansj to position for further operation.

' MARIO GALLo. 

